| Presentation | 2012-08-24 Silicon-Germanium/Silicon Nano-Wire Waveguide for Energy-Saving Optical Switch and Variable Optical Attenuator Shigeaki SEKIGUCHI, Lei ZHU, Teruo KURAHASHI, Kenichi KAWAGUCHI, Ken MORITO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | For active optical waveguide devices on silicon (Si)-platform, highly efficient carrier accumulation in the waveguide region is the key to realize energy-saving and compact devices. We proposed a silicon-germanium (SiGe)/silicon (Si) waveguide structure to achieve such a purpose. In the proposed structure, a type-I hetero-interface formed by SiGe and Si is expected to confine carriers effectively in the narrow-gap SiGe waveguide core. In this report, first we will investigate carrier accumulation effect of the structure by numerical simulation. And we will demonstrate low-power operation of a small-size optical switch and a variable optical attenuator (VOA) we fabricated. The fabricated Mach-Zehnder optical switch shows a low switching power of only 1.53 mW with a compact phase shifter length of 250μm. The switching time of the optical switch is less than 4.6 ns. The fabricated VOA shows a 30-50% low-current operation compared to conventional Si waveguide VOA of the same device length. These results show that our proposed SiGe/Si waveguide structure holds promise for active devices with compact size and low operation power. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | silicon photonics / silicon-germanium / heterostructure / carrier-plasma / optical switch / valiable optical attenuator |
| Paper # | R2012-45,EMD2012-51,CPM2012-76,OPE2012-83,LQE2012-49 |
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| Conference Information | |
| Committee | CPM |
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| Conference Date | 2012/8/16(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Component Parts and Materials (CPM) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Silicon-Germanium/Silicon Nano-Wire Waveguide for Energy-Saving Optical Switch and Variable Optical Attenuator |
| Sub Title (in English) | |
| Keyword(1) | silicon photonics |
| Keyword(2) | silicon-germanium |
| Keyword(3) | heterostructure |
| Keyword(4) | carrier-plasma |
| Keyword(5) | optical switch |
| Keyword(6) | valiable optical attenuator |
| 1st Author's Name | Shigeaki SEKIGUCHI |
| 1st Author's Affiliation | Fujitsu Laboratories Ltd.() |
| 2nd Author's Name | Lei ZHU |
| 2nd Author's Affiliation | Fujitsu Laboratories Ltd. |
| 3rd Author's Name | Teruo KURAHASHI |
| 3rd Author's Affiliation | Fujitsu Laboratories Ltd. |
| 4th Author's Name | Kenichi KAWAGUCHI |
| 4th Author's Affiliation | Fujitsu Laboratories Ltd. |
| 5th Author's Name | Ken MORITO |
| 5th Author's Affiliation | Fujitsu Laboratories Ltd. |
| Date | 2012-08-24 |
| Paper # | R2012-45,EMD2012-51,CPM2012-76,OPE2012-83,LQE2012-49 |
| Volume (vol) | vol.112 |
| Number (no) | 182 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |